genus
Walnuts
Juglans
Field notes
Children
- Eastern Black Walnut native
- Persian Walnut introduced
- Butternut native
- Southern California Walnut native
- Northern California Black Walnut native
- Manchurian Walnut present
- Arizona Black Walnut native
- Andean Walnut
- Japanese Walnut introduced
- Little Walnut native
- Mexican Walnut
- Bixby's Walnut
- Intermediate Walnut
- Paradox Hybrid Walnut
- West Indian Walnut
- Bolivian Walnut
Range
Greener is more native, amber more introduced; paler is less certain. How this was decided
Key traits
- Layer
- Trees
From USDA PLANTS.
Top native walnuts All
Native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter.
-
Eastern Black Walnut
Juglans nigra
caterpillars
114
hosts
18
food
31
flowers
68
shelter
2
-
Butternut
Juglans cinerea
caterpillars
73
hosts
13
food
19
flowers
5
-
Little Walnut
Juglans microcarpa
caterpillars
41
hosts
6
food
7
-
Arizona Black Walnut
Juglans major
caterpillars
38
hosts
6
food
9
-
Southern California Walnut
Juglans californica
caterpillars
13
hosts
1
food
9
flowers
1
-
Northern California Black Walnut
Juglans hindsii
caterpillars
12
hosts
1
food
7